12 - Common Use- Case Scenarios

Question 1

What are the six pillars of the AWS Well-Architected Framework?

Answer 1

• Reliability
• Performance efficiency
• Security
• Cost optimization
• Operational excellence
• Sustainability

Question 2

What does reliability mean in the context of cloud applications?

Answer 2

Avoiding the complete failure of your application by replacing failed resources with healthy ones

Question 3

What is performance efficiency?

Answer 3

Getting the desired performance without over-provisioning capacity and without sacrificing reliability

Question 4

Fill in the blank: Security is concerned with ensuring the ______, integrity, and availability of data.

Answer 4

[confidentiality]

Question 5

What principle should you follow when creating IAM user and resource policies?

Answer 5

Principle of least privilege

Question 6

What is the first step to achieving cost optimization in AWS?

Answer 6

Analyze where your money is going in the cloud

Question 7

True or False: Cost optimization means reducing costs to as close to zero as possible.

Answer 7

False

Question 8

What is operational excellence fundamentally about?

Answer 8

Automating the processes required to achieve and maintain reliability, performance efficiency, cost optimization, and security

Question 9

How can you use AWS to monitor the health of an application running on several EC2 instances?

Answer 9

Use elastic load balancing health checks

Question 10

What does the AWS Well-Architected Tool help you do?

Answer 10

Compare your AWS resources against the Well-Architected Framework

Question 11

What is the purpose of an application load balancer in a highly available web application?

Answer 11

Distribute connections to healthy instances using a round-robin algorithm

Question 12

Fill in the blank: The default security group in a VPC blocks traffic that’s not explicitly allowed by a ______.

Answer 12

[rule]

Question 13

What does the Auto Scaling group use to determine whether an instance is healthy or needs to be replaced?

Answer 13

Health checks performed by the application load balancer

Question 14

What is the benefit of replacing a failed resource rather than trying to fix it?

Answer 14

It removes the need to figure out what’s misconfigured and allows for quicker recovery

Question 15

Name a method to improve performance for users located far from your AWS region.

Answer 15

Create a CloudFront distribution

Question 16

What should you use to avoid data loss in AWS?

Answer 16

Backups and replication

Question 17

What does enabling detailed logging on AWS resources help you track?

Answer 17

Every activity that occurs on your AWS resources

Question 18

What is a key benefit of using AWS Cost Explorer?

Answer 18

To see how much you’re spending on AWS services and how those expenditures change over time

Question 19

What is one way to save money on EC2 instances that are used temporarily?

Answer 19

Terminate those instances when they’re not needed

Question 20

What AWS service can you use to automatically test new application code for security vulnerabilities?

Answer 20

CodeBuild

Question 21

What is the significance of S3 object versioning?

Answer 21

It allows for recovery of modified or destroyed data

Question 22

Fill in the blank: The first step in creating a highly available web application is to create an inbound ______ rule.

Answer 22

[security group]

Question 23

What type of load balancer should you create for distributing connections in a web application?

Answer 23

Application load balancer

Question 24

What does configuring a load balancer allow?

Answer 24

It assigns a publicly resolvable domain name and allows the load balancer to receive connections from the Internet.

Question 25

What IP address type should be selected for the load balancer?

Answer 25

IPv4

Question 26

What protocol and port should be configured for the load balancer?

Answer 26

HTTP and port 80

Question 27

What must be selected in the Availability Zones section for the load balancer?

Answer 27

At least two availability zones

Question 28

What is the purpose of the button titled 'Configure Security Settings'?

Answer 28

To configure security settings for the load balancer

Question 29

What security group should be selected for the VPC?

Answer 29

The default security group

Question 30

What is the target type selected when creating a new target group?

Answer 30

Instance

Question 31

What protocol and path should be set for health checks?

Answer 31

HTTP and /

Question 32

What does the Auto Scaling group do?

Answer 32

It provisions and maintains a certain number of healthy instances.

Question 33

What is the scaling policy used in this setup?

Answer 33

Target tracking policy based on average aggregate CPU utilization

Question 34

What happens if CPU utilization exceeds 50 percent?

Answer 34

Auto Scaling will scale out by adding another instance.

Question 35

What is the minimum and maximum size of the Auto Scaling group in this configuration?

Answer 35

Minimum of 1 and maximum of 3 instances

Question 36

What data does CloudWatch store for up to 15 months?

Answer 36

Metrics reported by EC2

Question 37

What is the first step in hosting a static website on S3?

Answer 37

Creating an S3 bucket

Question 38

What does a static website refer to?

Answer 38

A website with static files that can be updated but does not change dynamically.

Question 39

What must be done to allow public access to an S3 bucket?

Answer 39

Deselect the Block New Public ACLs and Uploading Public Objects check box.

Question 40

What should the index document filename be when configuring S3 for static website hosting?

Answer 40

index.html

Question 41

What is required for each object you want to make viewable on S3?

Answer 41

Grant public read access

Question 42

What must be true about the bucket name if using a custom domain name?

Answer 42

The bucket name must be the same as the domain name.

Question 43

What AWS service can be used to secure a static website hosted on S3 with HTTPS?

Answer 43

CloudFront distribution

Question 44

Name two popular AI/ML services offered by AWS.

Answer 44

* Amazon Comprehend * Amazon SageMaker

Question 45

What does Amazon Comprehend analyze?

Answer 45

Text to uncover useful information such as language, topics, and sentiment.

Question 46

What is Amazon Comprehend used for?

Answer 46

Analyzing text to uncover useful information such as language, main topics, tone, and commonly occurring phrases. ## Footnote Useful for identifying patterns in customer feedback and organizing documents by topic.

Question 47

What types of data can Amazon Kendra index and search?

Answer 47

Data from S3 buckets, SQL and nonrelational databases, and third-party services like Microsoft OneDrive, Salesforce, and ServiceNow. ## Footnote It can index common document formats, PDFs, HTML files, and audio and video files.

Question 48

What is the purpose of Amazon Lex?

Answer 48

To create text or voice-based conversational interfaces, such as chatbots. ## Footnote Common scenarios include call center routing, technical support, travel booking, and sales.

Question 49

How does Amazon Lex enhance user interaction?

Answer 49

By mimicking and understanding user input, and integrating with Amazon Polly for speech synthesis. ## Footnote Provides humanlike speech instead of a robotic voice.

Question 50

What can Amazon Rekognition identify?

Answer 50

People, places, objects, and text in images and video. ## Footnote Applications include facial recognition, content moderation, and labeling of videos or pictures.

Question 51

What is the main function of Amazon SageMaker?

Answer 51

To allow data scientists and business analysts to create AI/ML applications. ## Footnote Offers a no-code approach for developing and training ML models.

Question 52

What unique capability does Amazon Textract offer compared to typical OCR tools?

Answer 52

Intelligently extracts text, handwriting, and tables while making associations between form fields and their data. ## Footnote Provides confidence scores for the extracted information.

Question 53

What is the function of Amazon Transcribe?

Answer 53

Converts speech to text using AI and supports batch and real-time transcription. ## Footnote Allows for custom vocabularies and redaction of sensitive information.

Question 54

What does Amazon Translate do?

Answer 54

Translates text between English and other languages, considering context for ambiguous words. ## Footnote Supports batch and real-time translation.

Question 55

What are the six pillars of the AWS Well-Architected Framework?

Answer 55

* Reliability * Performance efficiency * Security * Cost optimization * Operational excellence * Sustainability ## Footnote Detailed in the AWS Well-Architected Framework white paper.

Question 56

How does AWS's shared responsibility model work?

Answer 56

Both AWS and the user are responsible for different aspects of the application running on AWS. ## Footnote Users must understand their responsibilities to ensure security and performance.

Question 57

What is a trade-off when hosting a static website on S3 versus EC2?

Answer 57

Using S3 means AWS handles reliability and scaling, while using EC2 requires the user to manage these aspects. ## Footnote Users must evaluate the implications of each choice on performance and management.

Question 58

Fill in the blank: The AWS Well-Architected Framework includes the pillar of _______.

Answer 58

[sustainability]